1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2bddc9eef716d8a40ae263cfbe4d44dc252ec2642a2a73d25f8e3efd4781e5. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47aa66b3-4171-48ed-b2d4-145561ce36f4.json and https://artists.proofprofile.net/proofs/artist/47aa66b3-4171-48ed-b2d4-145561ce36f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1cb919cc80aedf58e86faf745b94993f3f9a788ac6ba1004afb46cf0a3098. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfefef609f9f6e1f5521a9047a7523b47f6c67ef062b290c9cc01ac849092bd. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:46:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77438a6cf56a8d23b02ce35b31c8a89cd6f4ccb3b33881cea27c7ee4dad6aa06. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d392545538d8e80988e5b19ed06af07e411743b9976f0c367744a06b080e97. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b82a89741e078033761bdc27c5f2545d18c33016db05b073f1877d12b83d18. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1cb919cc80aedf58e86faf745b94993f3f9a788ac6ba1004afb46cf0a3098. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7074460cc878c3b23bb75110ba2d62b5932d4c74bb9da869f3bda41adc0dd2d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6441e9d13ba2291478a4b51c223d0861c85f19ce0d5b189e52e30417da589e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e30f0351cbbb15f52a7858db6116392cd6ad5a53cba1c88fd440ee1caeca8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d852105faf7bbe4e03d1efab0d6f84b31ddabb0b76817d1b0b80e713d1771. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6176c7efdf4a44160c24334a2887d14359de68a7600f2d690a73ae842d51d2a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:07:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfefef609f9f6e1f5521a9047a7523b47f6c67ef062b290c9cc01ac849092bd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77438a6cf56a8d23b02ce35b31c8a89cd6f4ccb3b33881cea27c7ee4dad6aa06. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d392545538d8e80988e5b19ed06af07e411743b9976f0c367744a06b080e97. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b82a89741e078033761bdc27c5f2545d18c33016db05b073f1877d12b83d18. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:04:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1cb919cc80aedf58e86faf745b94993f3f9a788ac6ba1004afb46cf0a3098. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6441e9d13ba2291478a4b51c223d0861c85f19ce0d5b189e52e30417da589e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d852105faf7bbe4e03d1efab0d6f84b31ddabb0b76817d1b0b80e713d1771. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT472300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33822b053616d7d21987af34a1a6e8d0ba1b23c576ca9cd07662218dce053af2. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJJ2556221.